Clarence Ellis | Academic Influence

Clarence Ellis 's AcademicInfluence.com Rankings

Clarence Ellis

Computer Science

#1934

World Rank

#2009

Historical Rank

#914

USA Rank

Database

#7438

World Rank

#7710

Historical Rank

#911

USA Rank

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Computer Science

Clarence Ellis 's Degrees

PhD Computer Science Stanford University
Masters Computer Science Stanford University
Bachelors Electrical Engineering Stanford University

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Why Is Clarence Ellis Influential?

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According to Wikipedia, Clarence "Skip" Ellis was an American computer scientist, and Emeritus Professor of Computer Science and Cognitive Science at the University of Colorado at Boulder. While at the CU-Boulder, he was the director of the Collaboration Technology Research Group and a member of the Institute of Cognitive Science. Ellis was the first Black Person to earn a Ph.D. in Computer Science , and the first Black Person to be elected a Fellow of the ACM . Ellis was a pioneer in Computer Supported Cooperative Work and Groupware. He and his team at Xerox PARC created OfficeTalk, one of the first groupware systems. Ellis also pioneered operational transformation, which is a set of techniques that enables real-time collaborative editing of documents.

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Clarence Ellis 's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Groupware: some issues and experiences (1991) (3077)
Concurrency control in groupware systems (1989) (1079)
Operational transformation in real-time group editors: issues, algorithms, and achievements (1998) (597)
Dynamic change within workflow systems (1995) (585)
Office Information Systems and Computer Science (1980) (335)
Modeling and Enactment of Workflow Systems (1993) (273)
A conceptual model of groupware (1994) (263)
Groupware and computer supported cooperative work (1999) (180)
Proclets: A Framework for Lightweight Interacting Workflow Processes (2001) (174)
Project Nick: meetings augmentation and analysis (1986) (136)
rIBIS: A Real-Time Group Hypertext System (1991) (133)
Workflow Modeling Using Proclets (2000) (104)
A Workflow Change Is a Workflow (2000) (92)
OfficeTalk-D: An experimental office information system (1982) (84)
The Chautauqua workflow system (1997) (84)
Team automata for groupware systems (1997) (80)
Consistency and correctness of duplicate database systems (1977) (79)
Synchronizations in Team Automata for Groupware Systems (2003) (78)
Formal and Informal Models of Office Activity (1983) (77)
Applying scheduling techniques to minimize the number of late jobs in workflow systems (2004) (60)
A Robust Algorithm for Updating Duplicate Databases (1977) (56)
Performance Analytic Models and Analyses for Workflow Architectures (2001) (48)
ML-DEWS: Modeling Language to Support Dynamic Evolution within Workflow Systems (2000) (48)
Workflow: The Process Spectrum (1996) (46)
Proceedings of the 2001 ACM International Conference on Supporting Group Work (2001) (41)
Advances in Web and Network Technologies, and Information Management, APWeb/WAIM 2007 International Workshops: DBMAN 2007, WebETrends 2007, PAIS 2007 and ASWAN 2007, Huang Shan, China, June 16-18, 2007, Proceedings (2007) (41)
Design and implementation of GORDION, an object base management system (1987) (38)
Workflow Technology (1999) (38)
ICN-Based Workflow Model and its Advances (2009) (38)
Organizational computing: Definitions and issues (1991) (37)
Workflow Reduction for Reachable-path Rediscovery in Workflow Mining (2006) (34)
sigma - Algorithm : Structured Workflow Process Mining Through Amalgamating Temporal Workcases (2007) (28)
Beyond Workflow Mining (2006) (28)
The Nick Experiment Reinterpreted: Implications for Developers and Evaluators of Groupware (1989) (26)
An Evaluation Framework for Collaborative Systems (2000) (26)
Actor-Oriented Workflow Model (1999) (25)
Active Objects: Ealities and Possibilities (1989) (25)
Distributed Cooperation in Integrated Information Systems (1993) (24)
A Workflow Mining Method Through Model Rewriting (2005) (24)
The Neem Platform: An Evolvable Framework for Perceptual Collaborative Applications (2005) (24)
Nick Experimentation: Selected Results Concerning Effectiveness of Meeting Support Technology (1989) (23)
The neem dream (2003) (23)
Investigations on Stochastic Information Control Nets (2012) (21)
CORBA based architecture for large scale workflow (1999) (21)
Workflow performance and scalability analysis using the layered queuing modeling methodology (2001) (20)
Information Management Challenges in the Software Design Process (1987) (19)
Probabilistic Tree Automata (1970) (18)
Computer Supported Cooperative Work and Petri Nets (1996) (18)
Team automata for spatial access control (2001) (18)
An initial approach to mining multiple perspectives of a business process (2009) (16)
Proceedings of conference on Organizational computing systems (1995) (15)
A Framework and Taxonomy for Workflow Architecture (2000) (14)
Nick experimentation: some selected results (1989) (13)
Agent-Augmented Meetings (2003) (13)
Parallel compiling techniques (1971) (12)
Groupware: Overview and Perspectives (1991) (11)
A Framework and Mathematical Model for Collaboration Technology (1996) (11)
Automatic discovery of workflow models (2008) (11)
The Modelling and Analysis of Coordination Systems ; CU-CS-639-93 (1993) (10)
NEEM: An Agent Based Meeting Augmentation System (9)
Advances in Web and Network Technologies, and Information Management, APWeb/WAIM 2009 International Workshops: WCMT 2009, RTBI 2009, DBIR-ENQOIR 2009, PAIS 2009, Suzhou, China, April 2-4, 2009, Revised Selected Papers (2009) (9)
On the probability of deadlock in computer systems (1973) (9)
Person-to-Person Processes: Computer-Supported Collaborative Work (2005) (8)
Architectures for very large scale workflow management systems (1998) (8)
Agents in Groupware Systems (1998) (6)
Dynamic Change within Workflow Systems ; CU-CS-667-93 (1993) (6)
Performance analysis of two concurrency control schemes for design environments (1989) (6)
Probabilistic models of computer deadlock (1977) (6)
Net Models Supporting Human and Humane Behaviors (2003) (6)
Process Aware Information Systems: A Human Centered Perspective (2007) (5)
A model and algorithm for concurrent access within groupware (1991) (5)
Consistency within concurrent groupware systems (1991) (5)
The Neem Platform: An Extensible Framework for the Development of Perceptual Collaborative Applications (2002) (5)
Dynamic evolution within workflow systems (1999) (5)
A practicum - seminar in structured programming (1975) (4)
Threadmill: a highly configurable architecture for human communication analysis applications (2003) (3)
An Evolvable Framework for Perceptual Collaborative Applications (2002) (3)
Workflow Modeling Using Proclets ; CU-CS-900-00 (2000) (3)
Aspect-oriented Composition in Extensible Collaborative Applications (2002) (3)
The ThreadMill architecture for stream-oriented human communication analysis applications (2004) (3)
Office Information Systems Overview (1985) (3)
Learning the Control-Flow of a Business Process Using ICN-Based Process Models (2009) (2)
A Framework for Workflow Architectures ; CU-CS-847-97 (1997) (2)
Perceptual collaboration in Neem (2002) (2)
Preliminary Thoughts on Degrees of Security in Multiprocessor Systems ; CU-CS-036-74 (1974) (1)
An Overview of Souk Nets: A Component-Based Paradigm for Data Source Integration (1999) (1)
Computation and Social Systems (Report of the NSF ITO Grantees' Workshop, April 19-20, 1997) ; CU-CS-877-98 (1997) (1)
Pajaro Dunes Workshop report: the ACM Workshop on Fundamental Issues in Office Automation: a compilation of notes (1985) (1)
Second ACM-SIGOA Conference on Office Information Systems, June 25-27, 1984, Toronto, Canada (1984) (1)
ML-DEWS: A Workflow Change Specification Model and Language (1998) (1)
Editor's introduction (1984) (1)
Modeling and Analyzing Timed Changes within Workflow Systems ; CU-CS-869-98 (1998) (1)
A Distributed and Parallel Component Architecture for Stream-Oriented Applications (2004) (1)
The Halting Problem for Probabilistic Context-Free Generators (1972) (1)
The field of office systems (1986) (1)
Selected Papers from the Conference on Office Information Systems (Toronto, 1984) - Editor's Introduction. (1984) (1)
Computer Science Education in Taiwan -- An Afips Internship Report ; CU-CS-019-73 (1973) (0)
Analysis of some abstract measures of protection in computer systems (1978) (0)
Highlights of SIGOIS activities (1991) (0)
10 Groupware and Computer Supported Cooperative Work (0)
Optimal scheduling of homogeneous job systems (1975) (0)
Next Generation Workflow: Promises and Problems (Keynote) (1995) (0)
Office systems and information systems (1990) (0)
Office automation: The science that supports it (Panel Discussion) (1980) (0)
Syn hronizations in Team Automata forGroupware (1999) (0)
On the Probability of Deadlock in Computer Sciences ; CU-CS-026-73 (1973) (0)
Panel on alternative views of cooperative work in the office (1986) (0)
Team Automata for CSCWMauri e (2001) (0)
Goal Based Models of Groupware ; CU-CS-668-93 (1993) (0)
Office Systems Tools (1987) (0)
The Approximation of Probabilistic Turing Automata by Probabilistic Pushdown Automata ; CU-CS-020-73 (1973) (0)
Proceedings of the APWeb/WAIM 2007 DBMAN, WebETrends, PAIS and ASWAN international workshops on Advances in Web and Network Technologies, and Information Management (2007) (0)
The Validation of Parallel Co-Operating Processes ; CU-CS-065-75 (1975) (0)
NEEM: An Agent Based Meeting Augmentation System ; CU-CS-937-02 (2002) (0)
Office Application Systems (1987) (0)
Proceedings of the Second ACM-SIGOA Conference on Office Information Systems, COCS 1984, USA, 1984 (1984) (0)
Volume Contents (2004) (0)
Project NEEM : Agent Based Meeting Augmentation Professor (2002) (0)
A Model and Algorithm for Concurrent Access within Groupware ; CU-CS-616-92 (1992) (0)
[LK92] A. Lux and M. Kolb. Linking Humans and Intelligent Systems or : What User Agents Good for? InGWAI workshop on supporting Collaborative work between Human Experts and Intelligent Cooperative Informa- (1999) (0)
Actor Oriented Workflow: A Concept and Its Formalization ; CU-CS-848-97 (1997) (0)
Preliminary Investigations on Stochastic Information Control Nets ; CU-CS-1055-09 (2009) (0)
Dynamic change in office automation: modeling and analysis (1992) (0)
On the Propability of Deadline in Computer Systems. (1973) (0)
A Distributed and Parallel Component Architecture for Stream-Oriented Applications ; CU-CS-989-04 (2004) (0)
Is groupware a passing fad? (panel) (1990) (0)
Non-context-free probabilistic languages (1970) (0)
Distributed Cooperation in Integrated Information Systems (Dagstuhl Seminar 9215) (2021) (0)
Probabilistic Models of Computer Deadlock ; CU-CS-041-74 (1974) (0)
A Practicum -- Seminar in Structured Programming ; CU-CS-061-75 (1975) (0)
A Model and Algorithm for Concurrent Access within Groupware ; CU-CS-593-92 (1992) (0)

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What Schools Are Affiliated With Clarence Ellis ?

Clarence Ellis is affiliated with the following schools: